Adjustable desk lamp



FIG. 1 is a top, front, right side, perspective view of an adjustabledesk lamp showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The ornamental design for adjustable desk lamp, as shown and described. 